BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Acorn Woodpecker In Great Basin

All regionsGreat BasinForest birds

Acorn Woodpecker in Great Basin has surged: up 566% on the route-weighted index since 1972.

+566%Since 1972
6Routes In Region
39Years

Notable Signals

long arc increasecomputed index

Acorn Woodpecker has surged in Great Basin: up 566% on the route-weighted index since 1972.

Forecast

If the recent trend holds, Acorn Woodpecker in Great Basin is projected to rise about 19% by 2024 — from 0.28 in 2019 to a central estimate of 0.34 (95% range 0.16–0.52). A 5-year backtest shows a typical error of ±24.3%, with 100% of held-out values landing inside the 95% band.

+19%Change by 2024
0.34Projected 2024 index
0.16–0.5295% range
±24.3%Backtest error
19702024
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20200.320.140.49
20210.320.140.50
20220.330.150.51
20230.330.150.51
20240.340.160.52

Routes In Great Basin

Routes recording Acorn Woodpecker in Great Basin.
Iron GateCALIFORNIA412019
NubieberCALIFORNIA42018
Fall River MillsCALIFORNIA32011
MacdoelCALIFORNIA22010
LikelyCALIFORNIA12015
BartleCALIFORNIA12009

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.